Track a successful Squarespace form submission by firing a conversion after the form has been accepted. A click on Submit is not enough: the visitor could leave required fields empty or encounter an error.
For a standard Squarespace form block, a post-submit redirect to a dedicated confirmation page is a practical starting point. If you need an inline confirmation, the tracking must detect the form's successful completion.
Set up a post-submit redirect
- Create a published confirmation page on your site, such as
/contact-confirmed. Keep it out of the main navigation and search results if appropriate, but do not leave it as a draft. - Edit the page containing the form and open the form block settings.
- In the Content tab, choose Edit Post-Submit → Redirect → Attach Link.
- Select the confirmation page and save.
- Visit the public site while logged out or in an incognito window. Submit a valid test form and confirm it reaches that page.
Squarespace says post-submit redirects do not work while you are logged into the site, so testing from the editor can give a misleading result. Its form-block guide documents the setup and test.
Connect the confirmation to Google Ads
Choose one measurement path for the submission. You can use a Google Ads website conversion directly or send a lead event to GA4 and import it into Google Ads. Avoid counting both paths as separate primary conversions for the same enquiry.
For a Google Tag Manager setup:
- Confirm the correct container is installed on the published site and that your Squarespace plan supports the code placement you need. Check for existing Google tags before adding another installation.
- Create a website conversion action in Google Ads for the submitted lead. Choose manual setup and the Google Tag Manager installation option to get its conversion ID and label.
- In GTM, create a Google Ads Conversion Tracking tag with those values.
- Create a Page View trigger for Some Page Views. Match the site's hostname and the exact confirmation-page path, including the trailing-slash behavior your site actually uses.
- Confirm your sitewide Google tag and consent configuration, test in Preview, then publish the container.
Google's GTM conversion guide explains the tag fields. For a lead action, review whether One conversion per ad click fits your reporting objective. A form submission is not a purchase, and a fixed lead value is an estimate rather than collected revenue.
A confirmation-page rule can also fire on a direct visit or reload. Keeping the page out of navigation reduces accidental visits but does not prevent them. If that creates a material discrepancy, use a verified submission event or a deduplication method tied to the successful submission. The One count setting does not repair a false trigger.
If the form must show an inline confirmation
Use GTM Preview to inspect what happens when the actual form succeeds. Check whether it produces a reliable success event. A built-in Form Submission trigger may not detect the relevant AJAX behavior, so do not assume that checking “validation” makes it accurate.
If no usable event is available, an implementation can listen for the form's confirmed success and push a custom event to the data layer. That code must be tested against your specific form, including errors and rerenders. Do not substitute a button-click event and call it a completed submission.
Test before using it for bidding
Confirm that a valid submission fires the intended tag once. Then test an empty required field, a double click, a confirmation-page reload, and a direct visit to that page. Compare the form's saved entries with the events observed in Tag Assistant.
Check that unrelated forms do not trigger the action. Repeat the test after changing the form, template, or tracking setup. Tag Assistant can confirm firing, but a test without an eligible ad interaction does not prove Google Ads attribution.
Keep button clicks separate
Submit-button clicks can help diagnose whether people try to use the form. Track them as interactions if useful, but keep them separate from your completed-submission goal.
If you also record qualified leads or sales later, define those outcomes separately. A form completion tells you an enquiry arrived. Your follow-up process establishes whether it became a customer.